Coating apparatus



May 6 1924}.

J. W. COSGROVE COATING APPARATUS Filed Sent. 18 1919 3 Sheets-Sheet 1 WVE/V T17? 3 Sheets-Sheet 2 J. W. COSGROVE COATING APPARATUS Filed Sent. 18

May a 1924.

May 6 1924 J. W. COSGROVE COATING APPARATUS Filed Sent. 18. 1919' 3 Sheets-Sheet 5 (a k liilil.

Patented May 6, 1924'.

PATENT OFFICE.

JOHN W. COSGROVE, OF MEDFORD, MASSACHUSETTS, ASSIGNOR TO IINITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

COATING APPARATUS.

Application filed September 18, 1919. Serial No. 824,529.

To all whom. it mag concern:

Be it known that 1, JOHN W. Cosenovn, a citizen of the United States, residing at Medford, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Coating Apparatus, of which the following description, in c0nnection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to the application of coating substances. In the coating of certain objects, as the layers of a built-up sole of a shoe, such an adhesive as cement is applied to adjacent surfaces lying at an angle to one another, these being, for example, upon the inner face of an outer sole layer and the edge of a beveled shank piece secured thereto, for the purpose of joining them to opposed surfaces, which may be one face of the next layer of the sole and its beveled edge. It is difficult to cement properly work of this character, and an object of the present invention is to provide for quickly and uniformly coating such surfaces.

In the attainment of this object, there is furnished, as a feature of the invention, an apparatus for applying a coating to such work as the inclined surfaces described above, said apparatus including an applying roll and a pressure roll having surfaces extending opposite each other from points substantially at the extremities of the respective rolls for a distance as great as the width of one of the surfaces to be coated, and with the applying roll projecting beyond the pressure roll to a distance as great as the width of the other surface to be coated.

By this arrangement an applying surface is given upon which the surfaces to be treated are straightened and coated, and the associated roll, while capable of exercising the alining pressure, leaves a space into which the work may be bent in the operation.

A further feature of the invention concerns the establishment of a desired angular relation between the axes of the work-engaging rolls, thus permitting the correction of errors in parallelism between their cooperating peripheral portions. and insuring such a pressure upon the work as to bring the surfaces to be coated in correct alineadjustment to be effected. Furthermore, to

adapt the apparatus to operate upon work of different thickness, one of the rolls may be yieldably mounted. I have herein shown the adjustable roll and its mounting arranged to yield together.

In the following description these and other features will be developed in connection with the accompanying drawing, in which Fig. 1 is a top plan view of one embodiment of the invention;

Fig. 2 is a front elevation thereof;

Fig. 3 is an end elevation, looking from the left in Fig. 2;

Fig. 4 shows in detail, in side elevation, thti1 scraping devices for the applying roll; an

Fig. 5 is a view in side elevation of a shoe sole which may be cementedby the apparatus of the present invention.

The main frame of my improved apparatus consists of a tank or receptacle 10 for the cement or other coating substance, this tank having projecting from one side an arm 12. The contents of the tank. may be heated by elect-ric units inserted in recesses 14 in the bottom. This bottom portion of the tank is shown as corrugated at 15, this increasing the heated'area and more effectively maintaining the cement fluid. The bottom is preferably inclined toward the center of the tank, and from this point a passage leads to an opening at one side of the bottom. this being closed by a screw plug 16, which when removed will permit the contents of the tank to be drained ofi. In bearings in the end walls of the tank is journaled a shaft 18, having fixed upon it and extending practically the full width of the tank an applying roll 20. To bring up the cement from the body in the tank and effectively distribute it over the work. the periphery of the applying roll is pr vided with a circumferential series of shallow and slightly spiral grooves 22. Secured to the shaft 18 outside the tank is a. gear 2-1 meshing with an idler gear 26 rotatable about a short spindle 28 projecting from. one of two spaced upwardly extending branches 36, 36 of the arm 12. The idler 26 in turn meshes with an elongated pinion 3O fastened upon the side of a. driven pulley 32, the pinion and pulley being rotatable about a spindle 34 fixed in the upper extremities of the arm branches 36. Adjacent to the pulley 32 is a loose pulley 38 there being a shifting device 40 provide to carry the driving belt (not shown) from one pulley to the other. By this caring the roll 20 is rotated in the direction indicated by the arrow in Fig. 3 of the drawm s.

ilt the rear of the applying roll in the upper edges of the end walls of the tank are ways 42, 42 to receive a scraper 44 extending at its inner extremity into roximity with the surface of the applying roll and serving to limit the thickness of the coating of cement which may be presented to the work by the roll. The upper surface of the scraper also furnishes a table upon which the work may be laid for advance to the applying roll. To vary the effective distance of the end of the scraper from the roll. it carries, rotatably mounted in a depending portion 46. a screw 48, which is threaded into the rear wall of the tank. Since it may be desired to coat portions only of the work passing over the applying roll. the main scraper 4.4 has mounted at its under side an auxiliary scraper :30, the length of which is sufficient to remove ccment from the roll over a portion equal to the width of the area of the work which is to be left uncoated. To alter its relation to the work, the auxiliary scraper is preferably held for adjustment longitudinally of the axis of the roll by screws 52 passing through a slot 54 lying transversely of the main scraper, these screws being threaded into the auxiliary scraper. The position of the auxiliary scraper beneath the main scraper is particularly advantageous, in that the collected cement cleaned from the app-lying roll falls therefrom into the body of cement contained in the tank. If, instead, the auxiliary scraper were mounted upon the top of the main scraper, there would be a tendency for the portion gathered by the former to accumulate in the space between the two scrapers, thus being returned to the surface just cleaned and also piling up at each side of the cleaned area upon the cement-carrying surface of the roll, causing at these points the application of an excessively thick coating. At the opposite side of the tank from the scraper 44 there is mounted across the top a grating 56 to receive and support the work and permit any excess of cement to be returned therefrom directly to the tank.

Pivoted upon the spindle 34 at the inner side of the inner arm extension 36 is a support 58 for a bearing frame 60. The frame 60 is also pivoted upon its support at 62, the axis of this last-mentioned pivot extending at right angles to the spindle 34, so that movement of the bearing frame is permitted in intersecting planes. Journaled in the frame 60 is a shaft 64, .having fast upon it a pressure and feed roll 66 co-operating with the applying roll to hold the work in contact with it and to aid in the advance of such work. Secured to the shaft 64 is a gear 68 meshing with the pinion 30 at one side of the pinion 26, this rotating the pressure roll in the opposite direction to that in which the applying roll is turned. The frame 60 is fixed in position upon the sup port by a screw 70 passing through an opening in the bearing frame somewhat larger than the diameter of the screw and having its threaded portion engaging the support 58. The turning of the head of the screw into cont-act with the bearing frame fastens the latter at whatever angle it may have been adjusted about its pivot 62, and thus enables parallelism to be established between the co-operat-ing elements of the peripheries of the rolls. In this manner defects in the manufacture of the machine may be corrected. To make this fastening of the frame more secure, it is provided with an extension 72 having two openings to admit screws 74 threaded into a guide yoke 75 surrounding and rotatable about the extremity of the spindle 34. These screws act to fix the angular adjustment of the bearing frame in the same manner as does the screw 70. To enable the pressure roll to accommodate itself to different thicknesses of work, it is drawn toward the applying roll by a spring 7 6 connected to a portion 7 8 of the bearing frame, and to the tank wall, this movement being permitted by the rotation of the support 58 about the spindle 34. The normal separation of the rolls may be varied by a screw 79 having its threaded portion turning in one of the arm extensions 36 and contacting at its inner end with the support 58 below its pivot. To remove from the pressure roll cement and particles which may accumulate thereon. I have shown extending over the top of said roll, between its hearings in the frame 60. a yoke 80, and in a. vertical slot in this yoke is mounted a contact member 82. which may be of felt. To force the edge of the felt against the surface of the roll, screws 84 are' threaded through the yoke at the top of the slot and bear against the felt or a. backing strip therefor, being fixed in their adjusted positions by lock nuts 86. The length of the pressure roll 66 is preferably less than that of the applying roll 20 for a purpose which will hereinafter be developed.

In describing the operation of this apparatus, let it be assumed that there are to be coated with cement portions of a sole S, consisting of an outer or bottom layer A, an inner shank piece B having a front edge 6 beveled upwardly and rea-rwardly, and an inner ,forepart piece 0 provided with an edge for contact with the edge 6 and inclined equally and oppositely thereto. The edges 1) and 0 and opposed surfaces e and 7 upon the layer A and the piece C, respectively, are to be secured in contact. This is as illustrated in Fig. 5 of the drawings. The bottom layer A is first passed through the apparatus with the heel portion Grprojecting beyond the left end of the applying roll, as viewed in Fig. 2, the auxiliary scraper being so positioned upon the main scraper 44 that it will remove from the applying roll the cement which would be laid upon the forepart' portion, this causing only the shank portion to be coated. To this coated area the shank piece B is caused to adhere, and then, with the auxiliary scraper removed or out of contact with the applying roll, the work is again introduced between the rolls, this time with the inner or norma-lly'upper edge of the shank piece bevel b substantially opposite the outer edge of the applying roll (Fig. 2) and the juncture of this beveled edge with the area 6 of the layer A opposite the adjacent edge of the roll 66. The pressure applied directly to the forepart portion of the layer A and indirectly to the shank portion forces the surface 6 of the forepart portion against the applying roll, and at the same time urges the beveled surface I) of the shank piece toward the applying roll, which projects beyond the pressure roll for a distance at least as great as the width of said bevel, straightening these two surfaces 0 and 6 into alinement to allow their perfect presentation to the roll and resulting uniform coating. In this operation the shank and heel portions are displaced upwardly, this being permitted by the space at the end of the pressure roll: see Fig. 2. Perfect contact of the alined surfaces 6 and b with the apply ing roll may be assured by a preliminary adjustment of the pressure roll upon its support about the pivot 62. Variations in the thickness of the work are taken care of by the yield of the pressure roll with its support about the spindle 34, this movement being in planes intersecting the movement of adjustment just mentioned. The forepart piece C is now applied to this closed area. its'bevel a being joined to the bevel b and its surface f to the surface 6.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In an apparatus for coating objects having surfaces normally inclined with respect to each other, a coating-applying roll, and a pressure roll, said rolls having coo-perating surfaces extending @{PPOS'itG each other from'points substantially at the extremities of the respective 'rol s for a distance as great as the width of one of the surfaces to be coated and the applying roll projecting beyond the pressure roll for a distance as great as the width of the other surface to be coated; A

2. In an apparatus for coatin a'surface of a main sole layer and an ad acent beveled edge of an attached layer, a coating applying roll, and a pressure roll, said rol s having oo-operating surfaces extending 0pposite each other from points substantially at the extremities of therespective rolls for a distance as great as the length of the surface of the main sole layer and the applying roll projecting beyond the pressure roll for a distance as great as the width of the beveled edge of the attached layer.v

3. In a coating apparatus, a coating-applying roll, a co-operating roll, a movable mounting for one of the rolls arranged to permit the angular relation between the axes of said rolls to be varied, and means for fixing the mounting against movement in its adjusted position.

4. In acoating apparatus, a coating-applying roll. a co-operating roll, a pivotal mounting for one of said rolls arranged to turn about an axis substantially at right angles to the axis of such pivotal roll, amounting for the associated roll fixed relatively to the pivotal mounting, and means for fixing the mounting against movement upon its pivot.

5. In a coating apparatus, a coating-applying roll. a co-o-perat-ing roll, a movable mounting for one of the rolls arranged to permit the angular relation between the axes of said rolls to be varied, means for fixing the mounting against movement in its adjusted position. and means arranged to permit the yield of one of the rolls.

6. In a coating apparatus, a coating-applying roll, a co-operating roll, a pivotal mounting for one of said rolls, means arranged to normally prevent the mounting from turning in either direction about its pivot, and to release such mounting for angular adjustment, and means arranged to permit the yield of the roll and its mounting.

7. In a coating apparatus, a main frame, a roll journaled therein, a bearing frame mounted to move in intersecting planes upon the main frame, and a roll journaled in the bearing frame, one of the rolls being a coating-applying roll.

8. In a coating apparatus, a coating-applying roll, a .co-operating roll, a plurality of movable mountings for one of the rolls, one of said mountings being supported for movement upon another, and means arranged to secure the mounting against movement upon the associated mounting.

- 9. In a coating apparatus, a coating-applying roll, a co-operating roll, a plurality of pivoted mountings for one of the rolls, and means arranged to secure one of the mountings against movement upon another.

10. In a coating apparatus, a coating-applying roll, a co-operating roll, a yieldable pivoted mounting for one ofthe rolls, a mounting pivoted upon the yieldable mounting, and means arranged to adjustably fix the osition of the mounting carried by the yiel able mounting.

11. In a coating apparatus, a coating-applying roll, a co-operating roll, a movable mounting for one of the rolls, and means arranged to permit the establishment and maintenance of parallelism between the axis of the movable roll and that of the associated roll.

12. In a coating apparatus, a main frame, a coating-applying roll journaled therein, a support pivoted upon the main frame, means arranged to vary the normal position of the support, a bearing frame pivoted upon the support, means arranged to fix the bearing frame in position, and a pressure roll journaled in the bearing frame.

13. In a coating apparatus, a main frame, a coating-applying roll journaled therein, a spindle mounted in said frame, a support turning upon the spindle. a bearing frame pivoted upon the support, a pressure roll journaled in the bearing frame, and means for fixing the bearing frame to the support.

14. In a. coating apparatus, a main frame, a coating-applying roll journaled therein, a spindle mounted in said frame. a support turning upon the spindle, a bearing frame pivoted upon the support, a pressure roll journaled in the bearing frame, means for fixing the bearing frame to the support, and an adjusting member for the support contacting with the main frame.

15. In a coating apparatus, a main frame,

a coating-applying roll journaled therein, a spindle mounted in said frame, a support turning upon the spindle, a bearing frame pivoted upon the support, a, pressure roll journaled in the bearing frame, means for fixing the bearing frame to the support, an adjusting member for the support contacting with the main frame, and a spring co-operatin with the main and bearing frames.

16. In a coating apparatus, a main frame, a coating-applying roll journaled therein, a spindle mounted in said frame, a support turning upon the spindle, a bearing frame pivoted upon the support, a pressure roll journaled in the bearing frame, means for fixing the bearing frame to the support, and a guide for the bearing frame rotatable about the spindle.

17. In a coating apparatus, a main frame, a coating-applying roll journaled' therein, a spindle mounted in said frame, a support turning upon the spindle, a. bearing frame pivoted upon the support, a pressure roll journaled in the bearing frame, means for fixing the bearing frame to the support, a guide for the bearing frame rotatable about the spindle, and a variable connection between the guide and bearing frame.

18. In a coating apparatus, a receptacle, an applying roll rotatable therein, a main scraper extending over the top of the receptacle into co-opcration with the roll, and an auxiliary scraper secured to the under side of the main scraper.

19. In a coating apparatus, a receptacle having ways at its upper portion, an applying roll rotatable in the receptacle, a main scraper mounted in the ways and co-operating with the roll, and an auxiliary scraper variable in position upon the under side of the main scraper.

In testimony whereof I have signed my name to this specification.

JOHN W. COSGROVE. 

